Journal of coordination chemistry, 2016-07, Vol.69 (11-13), p.1802-1811
2016
Volltextzugriff (PDF)
Details
- Autor(en) / Beteiligte
- Titel
- Staggered pillaring: a strategy to control layer-layer packing and enhance porosity in MOFs
- Ist Teil von
- Journal of coordination chemistry, 2016-07, Vol.69 (11-13), p.1802-1811
- Ort / Verlag
- Abingdon: Taylor & Francis
- Erscheinungsjahr
- 2016
- Quelle
- Taylor & Francis
- Beschreibungen/Notizen
- Convenient access to metal-organic frameworks (MOFs) with defined structural and chemical features is required to satisfy the design criteria for targeted applications. Here, we demonstrate that staggered pillaring between the layers of a binodal 2-D metal-organic framework (MOF) at only the alternating axial sites of the dimetallic copper(II) paddlewheel nodes aligns the 2-D layers and significantly increases the porosity of the resulting 3-D MOF. Two new pillared MOFs of this form were synthesized, [Cu 3 (bcppm) 2 (NO 3 ) 2 (L)]·xS (where bcppm = bis(4-(4-carboxyphenyl)-1H-pyrazolyl)methane and L = DABCO and pyrazine), via a mixed ligand synthesis. Both pillared 3-D frameworks have considerably larger BET surface areas than their 2-D counterpart, due to the alignment of 2-D layers from a staggered to eclipsed arrangement in the 3-D material; this increase in pore space and surface area is realized despite both materials being 2-fold interpenetrated. The strategy outlined here demonstrates a method of designing porous 3-D MOFs from nonporous 2-D-layered materials with a minimum of layer-layer connections.